Serious computer help.... please?

OK. recently i lost everything, i accept that. so yesterday i downloaded some antivirus software so i can have on, i had to restart the system. when i did this i recieve this message" SECURITY ACCOUNTS MANAGER INITIALIZATION FAILED BECAUSE OF TH E FOLLOWING ERROR: A DEVICE ATTACHED TO THE SYSTEM IS NOT FUNCTIONING. ERROR STATUS:0XC0000001. PLEASE CLICK OK TO SHUT DOWN THIS SYSTEM AND REBOOT IN SAFE MODE, CHECK EVENT LOG FOR MORE DETAILED INFORMATION" thats it. i did reboot in safe mode and it did the same thing, i also started in the last know good configuration and it did the same thing. some one who knows what to do please help. if you want email me and i will give you my number so we can do this over the phone. or maybe i just need a new copmuter. thanks in advance

Serious computer help.... please?windows

If the SAM file is deleted, Windows onboot will simply recreate one - 1 Administrator and 1 Guest with blank passwords, Guest disabled. If this procedure is attempted on XP the following error occurs on bootup: lsass.exe - System Error %26lt;br%26gt; Security Accounts Manager initialization failed because of the following error: A device attached to the system is not functioning. Error Status: 0xC0000001. Please click OK to shutdown this system and reboot into Safe Mode, check the event log for more detailed information. Rebooting into safe mode produces the same error, however if you boot from Petter Nordahl-Hagen's boot disk http://home.eunet.no/~pnordahl/ntpasswd/ and change this registry value: \HKEY_LOCAL_MACHINE\SYSTEM\Setup\SystemS... to 0x1 - reboot - it will error with: Windows Message %26lt;br%26gt; The system is not fully installed. Please run setup again. Click OK to reboot and change the value back to 0x0 and reboot again. A new SAM file will of been created.